Apparatus for purifying gas.



' N0. 656,60l. Patented Aug. 2|, I900. E. .1. nurr.

APPARATUS FOR PUBIFYING GAS.

(Application filed Feb. 16, 1900.)

(No Model.) 2 Sheets$hest l.

E ii I I o f I I 0 I "m Nonms PETERS w. PHOTO-LlTNO-. wnsumomu. n.c.

No. 656,60L} Patented Aug. 2|, I900.

E. .1. DUFF.

APPARATUS FOR PURIFYING GAS.

(Application filed Feb. 16, 1900.) (No Model.) 2 Sheets-Sheet 2.

{NITED STATES PATENT OFFICE.

EDWARD JAMES DUFF, F LIv RPooL, ENGLAND, ASSIGNOR or oNE-HALE TO THEUNITED ALK LI ooMPANY,'LIMITED, OF SAME PLACE.

APPARATUS FOR BURIFYING GAS.

SPECIFICATION forming part a ette s, ra a n 656,601, dated August 21,1900. Application fllecl February 16 1906. Serial No. 5,518. (No model.)

T M w it y n n: the dividing-walls between adjacent chan1= Be it knownthat I, EDWARD JAMES DUFF, 'bers there is concentrically arranged a pipea subject of the Queen of Great Britain and f, and opposed to the openends of this pipe, Ireland, and a resident of 30 James street, but atashort distance from it, are placed in 55 5 Liverpool, in the county ofLancaster, Engeach larger chamber a plates 9 of somewhat land, haveinvented certain new and useful greater diameter than the pipes f. Thehot Improvements in and Connected with the gases entering at the toppass downward Treatment of Producer-Gases and Apparatus through thetubes (1 in the larger chambers Therefor, (for which British LettersPatent '0, the various streams reuniting and mixing 6o 10 have beenapplied for, No. 18,580, September in each of the intervening smallerchambers 14, 1899,) which invention is fully set forth In their downwardpassage the gases are in the following specification. cooled by water,which enters at the bottom This invention has for its object to effectof the tower by means of the central pipe f greater efficiency andeconomy in the treat; in the lowest of the smaller chambers 0 On 65 I5ment of the gases generated in gas-producers, entering the largerchambers c the water is more especially with regard to the cooling ofdeflected by the plates 9 opposite the pipethe gases and the utilizationof otherwise exit,andit passes upward between and around waste heattherefrom. the vertical tubes d, through which the gases The tar isseparated and the ammonia reare passing. A similar deflection of the wa-7o covered, which may be done in the usual ter takes place in each ofthelarger chambers manner by passing the gases from the pro- 0, sincethe water always enters these through ducer upward through anabsorption-tower the concentric pipes f of the smaller chamberscontaining material down over which acid; is 0 The gases thus deprivedof their heat and caused to flow. The gases so deprived of tar of muchof their water-vapor pass away at h 75 and ammonia leave theabsorption-tower at from the bottom of the cooling-tower O and the upperpart or top and are ready to be are conducted to the place at which theyare cooled before burning, and it is chiefly to the to be consumed.

construction and arrangement of cooling 'ap- The water used for coolingthe gases has paratus for this purpose that the improveattained a hightemperature by the time it 80 3o ments according to this inventionrelate. reaches the top of the tower O and is con- In the followingdescription the accompaducted by the pipe directly to the top of nyingdrawings are referred to, Figures 1 and a second tower D, (suitablypacked,) through 2 being respectively an elevation and a plan which airis forced at d, the said air in its showing diagrammatically anarrangement of upward passage meeting the descending hot 8 5 apparatusaccording to this invention. Fig. water. The mixture of air andwater-vapor 3 is a vertical section of the interchanger or so obtainedis conducted from the outletd cooler; and Fig. 4: is a horizontalsection of to the gas-producer and gives rise to the prothe same on theline 4 l, Fig. 3. I duction of a further quantity of gas, which is Theabsorption-tower is indicated at A. treated as hereinbefore described. 040 The gases on leaving the said tower traverse The lute B in the pipeconnecting the ama pipe and lute-box B and pass to the top of tmonia-recovery tower A and the cooling a cooling-tower O, which consists ofany contower O is provided with baffle-plates b, fixed venient number ofsuperposed chambers c at the sides and alternately at top and botand 0preferably different in size and artom to the walls of the pipe B. Thereare 5 5 ranged alternately. also similar luting arrangements below.Passing vertically through each 'of' the hen these lute-boxes contain noliquid, larger chambers c are tubes (1, arranged the gases pass freelythrough the spaces bearound a' central space c,the open ends of neaththe plates; but on the admission of these tubes opening into the smallerchamliquid an efiective lute is formed (by the I00 bers 0 above andbelow. liquid closing the spaces beneath the plates) In each smallerchamber a and flush with which the gases will not pass at the ordinaryworking pressure. The first lute-box is a double one, consisting of theportions B and according to which one is luted (by liquid admitted bythe pipes and Valves 2') the gases from the producer pass either to theammonia-recovery tower A or without traversing this directly to thecoolingtower O through the lute-box B or when thislat-v ter and thelute-box B are closed then through the lute-box B direct to the point ofconsumption, as required. When'the lutebox B is openthat is, not lutedwith liquid+ and the lute-box B is closed-luted with liquid--th'e gaspasses through the lute-box 13 into the absorption-tower A andafterward.

passes through the pipe and lute-boX B down through the cooling-tower Oand out through the then-open lute-box B at the backof the baffle-plateb in the closed lute-box B to the exitX.

in frontof the baflle-plate b in the lute-box 13? directly to the exitX. This arrangement allows the ammonia-recovery tower or thecooling-tower, or both, to be shut off for re-- pairs or other purposewithout interfering with the production of gas.

Having now particularly described andascertained the nature'of the saidinvention and in What manner the same is to be performed, I declare thatwhat I claim is- 1. The combination with gas-producers of aninterchanger of heat through which the gases from the producer arepassed and through which water is also passed so that the waterabstracts heat from the gases, and means for bringing the water, thusheated into contact with air to producea mixture of air and Water-vapor,and means for passing the said mixture to the gas-producer,substantially as hereinbefore described.

2. In combination with gas-producersof an interchanger for cooling thegases therefrom consisting of alternately-arranged chambers, thealternate ones of which are provided with tubes in communication withintervening chambers provided with a passage for water, into, and from,the first-named chambers, and with deflectors to cause the water to passaround the tubes through which the gases pass, substantially ashereinbefore described.

3. The combination with an absorptiontowcr through which gases from aproducer are adapted to be circulated, a-cooling-tower having aplurality of contiguous passages for the gas and water respectively, apassage connectingith'e upper ends of the gas-passages with the outletfrom the absorption-tower, and a mixing-tower having an air-inlet at itslower end, and a water-inlet at its upper end connected by a passagewith the upper ends of the water-passages of the cooliugtower,substantially as described.

4. The combination with an absorptiontower through which gases from aproducer are adapted to be circulated, a cooling-tower having aplurality of contiguous passages for the gas and water respectively, apassage connecting the upperends-of the gas-passages with the outletfrom the absorption-tower, a mixing-tower having an air-inlet at itslower end, and a water-inlet at its upper end connected by a passagewith the upper ends of the water-passagesof the cooling-tower,bypassages from the gas-inlet pipe to the absorption-tower, to the upperends of the gaspassages through the cooling-tower, and to the gas-outletpassage from thecooling-tow-er, and means at the junctions of thecon-necting-passages between the towers and in the passage from theupper end of the absorption-tower to the cooling-tower, wherebysa-idpassages may be closed and the absorptiontower, or both theabsorption-tower and the cooling-tower, ent out of thelcircu-it for'thecirculation of the gases, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

EDXVARD JAMES DUFF. Witnesses:

ALFRED PATCHETT, THOMAS SPRoAT.

